We recently purchased what we think is a 1963 model 16', not including the tongue. It says Model 1900 in a closet.
It's a mess, so we a gutting it and starting over. Under the left seat of the dinette, there apparently was some type of tank. There's a 6" or so round hole in the wall (which the former owner badly patched with a plate). Can anyone tell me what this was originally? It looks like some type of vent.